package thread;

/**
 * @Author liangzai
 * @Description:
 */
class Counter{
    private int count = 0;

    synchronized public void add(){
        count++;
    }

    public int getCount(){
        return count;
    }
}

public class Demo2 {

    public static void main(String[] args) throws InterruptedException {
        Counter counter = new Counter();
        Thread t1 = new Thread(()->{
            for (int i = 0; i < 5000; i++) {
                counter.add();
            }
            System.out.println("t1结束！");
        });
        Thread t2 = new Thread(()->{
            for (int i = 0; i < 5000; i++) {
                counter.add();
            }
            System.out.println("t2结束！");
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();

        System.out.println("count="+counter.getCount());

    }

}






















